The duo of teachers and students, who were secretly observing on the snow, reported the battle situation to General Huo, who was in charge of defending the city, through the transmission crystal, the moment they found that the demon's attack density had decreased.

After receiving this information, General Huo immediately asked the herald to notify all the soldiers who were defending the city in front of the city to carry out the 'Qingyuan operation'. Qingyuan: The abbreviation for clearing long-range construction magic and clearing long-range fixed-point magic.

However, before the order could be fully issued. Between the more than 2,000 soldiers outside the city, rounds of black-purple magic arrays with a diameter of only half a meter appeared.

These circles, which are built by demons from ranged ranges, are built within 2 seconds of appearing. At that time, the circle will also be several times more complex than it was at the beginning, and attacks will be launched at the same time.

Moreover, the location of these circles is very inconspicuous. Either sticking to the ground or floating in the air at a distance of 2.5 meters. Both of these positions are not easily visible to the soldiers on the front line, especially those responsible for activating the barrier. Because these people's attention is completely focused on repairing the broken barrier and adjusting the mana output, how can they have the leisure to look around.

So, in this case. The sentient mage is about to get to work.

These magicians who are either magic staffs, magic wands, or magic books in their hands can detect the long-range construction magic of these demons as quickly as possible by perceiving magic, and destroy these magic arrays through physical attacks or magical attacks. During this process, messengers and regular combatants also help to clean up.

Since these long-range magic arrays do not have the self-protection mechanism of Xiao Jiu's 'Debaya's Reverse Brigade', as long as they destroy the magic circle with weapons or magic, they can be easily stopped.

For example, you can stomp on the circle with your foot, or rub the edge with the weakest small fireball.

Although the destruction method is extremely simple, the number of these magic arrays is simply too large.

There are only more than 2,000 people in Pengmai City, and the number of people in charge of Qingyuan is about 300 (scouts + messengers), but the number of these long-range magic arrays has reached 1,000.

Moreover, as long as one of these magic arrays is destroyed, a new one will appear in the next second, and it will still be in a different position.

Originally, for a magician who used enhanced magic (increased agility), the magic array that could only be activated in 2 seconds was not too easy to destroy.

But in the face of such a huge number and such endless characteristics, it is not so easy.

Especially, occasionally, dozens of magic arrays surround one person. It was really terrifying, and if you were not careful, one person would be killed, not to mention, the surrounding comrades-in-arms would also be affected.

So what happens if you really make a mistake and don't destroy the circle in time? According to the information provided by Pengmai City, it can be learned that the demon's long-range construction magic attacks are varied: poisonous mist, ground thorns, mind control, earthquakes, large-area explosion magic, and limited magic. (e.g. forbidden to use fire elemental magic, barrier magic)

……

However, the most terrifying thing is not these dense black and purple magic arrays, but the mysterious attack magic that the soldiers of Pengmai City call the 'Destruction Ball'.

This is an attack magic that is invisible to the naked eye, but can be detected through perceptual magic.

When the Scout perceives the demon's magic array, he will occasionally find a black dot floating 2 meters on the ground in the 'Perception Vision'.

The Scout will then immediately activate a brightly colored fluorescent magic orb to wrap the black dot that can only appear in the 'Perception Vision', and notify the surrounding soldiers, the general phrase is: "Attention! There's a ruin orb!"

When the soldiers heard this, they immediately retreated, keeping a distance of at least 3 meters from the fluorescent magic orb.

Generally, it takes 2~3 seconds from the discovery to the distance between the whole person and the light ball. The activation time of the 'Destruction Ball' is 6 seconds, so about 3 seconds after the people retreat, a muffled sound will be heard, and immediately after that, the ball of light used for marking will disappear as if it had been sucked in by something.

According to the information provided by Pengmai City, it can be understood that the location of the destruction ball is generally 2 meters above the ground level, and the activation time is 6~8 seconds. When activated, it consumes all matter within a 1.5 meter radius for 2 seconds, and then completely disappears with it. And it's still a defense-breaking technique, in terms of the magic that the Red Devil can use, it can't be defended at all, and it can only be dodged. [That's right, this is a black hole]

It is precisely because of the existence of the 'Destruction Ball' that the formation of the defenders outside Pengmai City is so sparse.

Scouts and messengers, who were already busy dealing with the 'long-range construction of magic arrays', are now even busier because of the 'Destruction Ball'. But fortunately, the frequency of this attack is very low, and the number of attacks per minute for a team of 2,000 people is about 100.

……

However! The demonic attack didn't stop there. They also have another means of attack - surprise attack.

This attack method is very simple and crude, that is, some low-level demons are directly thrown into the already busy defenders of Pengmai City through space magic.

And this kind of teleportation, since there is no magic array on the destination side, it is naturally impossible to stop the teleportation by destroying the magic array.

Then there is only one way to stop it, which is to use restriction magic to prohibit spatial teleportation in a certain area. Unfortunately, however, Pomp Wheat City does not have the talent to use the 'Confined Space Teleportation Magic'.

Therefore, at this moment, those combatants who use attacks to resist demon attacks must not only help clean up the long-range construction magic array, but also beware of demons that may suddenly emerge at any time. If you're idle, throw a few magic bullets or sword qi at the demon.

'Surprise Attack' is the lowest frequency of attacks, with only about 10 demons being teleported to the defenders every minute.

Although most of them are given for free, there are even some unfortunate ones that will fall directly into the attack range of the destruction ball, resulting in the second death of the game, and the direct bento.

But it is undeniable that the appearance of these surprise attack demons has indeed made the burden of these 2,000 soldiers even more serious.

……

However! These surprise demons will appear not only within the defenders' barriers on the front line, but also inside Pommai City.

And that's the fundamental reason why Ninety-Nine is stationed on the streets - to destroy the demons that suddenly appear in the city.

"Teacher, why don't those demons attack together?" The new researcher asked curiously with a magic telescope in his hand. "And their attacks ...... Why are they all gathered in front of the city gates? Obviously, you can attack (Pengmai City) directly......"